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Allan Hills A76006
Basic information Name: Allan Hills A76006
     This is an OFFICIAL meteorite name.
Abbreviation: ALHA76006
This meteorite may also be called Allan Hills 76006 (ALH 76006) in publications.

Observed fall: No
Year found: 1976 or 1977
Country: Antarctica [Collected jointly by ANSMET (US) and NIPR (Japan)]
Mass:help 1137 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 1(3)  (1978)  H6
Meteoritical Bulletin:  MB 56  (1979)  H6
MB 76  (1994)  H6
NHM Catalogue:  5th Edition  (2000)  H6
NIPR Catalogue:  2000 Edition  (2000)  H6
MetBase:  v. 7.1  (2006)  H6
Recommended:  H6    [explanation]

This is 1 of 5855 approved meteorites (plus 5 unapproved names) classified as H6.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Writeuphelp
Writeup from MB 56:
Warning: the following text was scanned and may contain character recognition errors. Refer to the original to be sure of accuracy.

DISCOVERY OF THE ALLAN HILLS A76006, ANTARCTICA, STONY METEORITE

Name: ALLAN HILLS A76006

Place of find: West of Allan Nunatak on the edge of the Polar plateau, Victoria Land, Antarctica.

76°38'59"S., 159°14'42"E.

Date of find: January 20, 1977.

Class and type: Stone. Olivine-bronzite chondrite (H6). Olivine Fa18.3.

Number of individual

specimens: 1

Total weight: 1137 g

Circumstances of find: Found during a helicopter search over an area of bare ice in the 1976-1977 season of the U.S.-Japan Joint Antarctic Expedition.

Source: K. Yanai, 1978. First meteorites found in Victoria Land, Antarctica, December 1976 and January 1977. Mem. Nat. Inst. Polar Res., Special Issue No. 8, 51-69.

Note: Also known as Allan Nunatak No. 6 and as Allan Hills No. 6. Allan Hills A76006 is the name approved by the Nomenclature Committee of the Meteoritical Society.

See also: W.A. Cassidy, E. Olsen and K. Yanai, 1977. Antarctica: a deep-freeze storehouse for meteorites. Science 198, 727-731, where the coordinates of the find site are given as 76°38'47"S., 159°22'57"E., and E. Olsen et al., 1978. Eleven new meteorites from Antarctica, 1976-1977. Meteoritics 13, 209-225.


[From Antarctic Meteorite Newsletter 4(1):]

Sample No.: ALHA76006

Location: Allan Hills

Field No.:

Weight (gms): 271.0

Meteorite Type: H6 Chondrite

 

Physical Description:

The stone has a remnant fusion crust that is black and <.5 mm thick. The fusion crust is patchy on the T surface and is more solid on the W surface. A reddish-brown surface underlies the fusion crust on the S and E surfaces. The fusion crust has many small fractures. The interior of the stone is iron oxide stained, however, gray clasts, some of which are circular in cross section are distinguish-able under the binocular microscope. Dimensions: 6.0 x 4.0 x 4.2 cm.

 

Petrographic Description:

This is same sample as Allan Hills #6, described in Olsen, et al., 1978.

Data from:
  MB76
  Table 2
  Line 6:
Origin or pseudonym:Main icefield
Mass (g):1137
Class:H6
Weathering grade:Ce
Fayalite (mol%):18
Ferrosilite (mol%):16
Comments:26Al=51±5
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 1(3) (1978), JSC, Houston
Published in Meteoritical Bulletin, no. 56, Meteoritics 14, 161-175 (1979)
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (76° 43'S, 159° 40'E)
     Recommended::   (76° 43'S, 159° 40'E)

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
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Synonymshelp: ALHA766 (Added by JNG 2/23/06)
Allan Hills No. 6 (Added by JNG 2/23/06)
Allan Nunatak No. 6 (Added by JNG 2/23/06)

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